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1. (WO1991005510) VOLUMETRIC MEASUREMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005510 International Application No.: PCT/GB1990/001604
Publication Date: 02.05.1991 International Filing Date: 17.10.1990
IPC:
A61B 5/091 (2006.01) ,G01F 17/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
08
Measuring devices for evaluating the respiratory organs
091
Measuring volume of inspired or expired gases, e.g. to determine lung capacity
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
17
Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
Applicants:
NATIONAL RESEARCH DEVELOPMENT CORPORATION [GB/GB]; 101 Newington Causeway London SE1 6BU, GB (AllExceptUS)
WILLIAMSON, Ian, George [GB/GB]; GB (UsOnly)
KERRIDGE, David, Henry [GB/GB]; GB (UsOnly)
Inventors:
WILLIAMSON, Ian, George; GB
KERRIDGE, David, Henry; GB
Agent:
PARKER, Geoffrey; Patents Department National Research Development Corporation 101, Newington Causeway London SE1 6BU, GB
Priority Data:
8923343.117.10.1989GB
Title (EN) VOLUMETRIC MEASUREMENT
(FR) MESURAGE VOLUMETRIQUE
Abstract:
(EN) A method of volumetric measurement of a first closed space of unknown volume which comprises communicating the first space with a second closed space of known volume, changing the known volume of the second space by a predetermined amount, obtaining representations of the pressures in the spaces respectively with the second space at its original known volume and its changed volume, and determining a measure of the unknown volume of the first space from the known volume, the volume change and pressure representations. The method is preferably applied to medical usage for diagnostic purposes with the first space being a body cavity, such as the nasal airway for which a small volume correlates with predisposition to glue ear.
(FR) Méthode de mesurage volumétrique d'un premier espace fermé de volume inconnu comprenant: la mise en communication du premier espace avec un second espace fermé de volume connu; la modification du volume connu du second espace par une quantité prédéterminée; l'obtention de représentations des pressions dans les espaces respectivenment avec le second espace à son volume connu original et son volume modifié; et la détermination d'une mesure du volume inconnu du premier espace à partir du volume connu, du volume modifié et des représentations de pressions. Cette méthode est destinée de préférence à un usage médical à des fins de diagnostic, le premier espace étant une cavité corporelle telle que le conduit nasal où un faible volume peut être lié à une prédisposition à l'oreille bouchée.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0450022US5146922DE000069025171GB2237117